Type-writing machine.



W. A. LORENZ.

TYPE WRITING MACHINE. APPLICATION P111121) JUNE 5, 190a.

1,1Q3,56L Patented Jan.5,1915.

0 W/fnesses "EIGHT.

wem'me smeime.

Syeeiflaetinn of Letters Patent.

Patented. Jan. 5, 1915.

lieu-trim fileii June 25, .wflfl. Serial Ha. 436,755.

.1 "7 air-120m 2 1 m we known l; a (when O'lf & reselling at l-lurtlmml. Mitford and. State of 'ilonneei icut, have vented certain mm and useful hnpmvemm-e in Tyge llriting llleehines, of Wlilfzl'l the fol ewing is a full, clear, anal exact flees It-ion, such. as will enable ollzere skilled in. the ere to which it apperlmine in make and. use the same.

This invention relates in typewriting ma. whines and more particularly '50 maelxin v-Slilllfij l pe.

* 1e (rlijQiteS m? the present invenli .mvlcL 'npm'a'efl wli -weby zlllu ylnlen 'll all times be mmnl .(11 proper pneitien H: receive the type.

AHUlllC-l object @013 is in pmv rle im 1 mews lm lml 1g i ljqeplmee m l l pnsiiim: (luring; prirmug, sm'sh zhat platen may readily be moved hzrwmcl i. hm-lwnml with respect; to elm hiting; plane.

A untlnr object is 31; n'm' 'iale means v-xi'lerelli ll'w plaice with respect he l'lw plane may at all lJIYI'iQS 3w mum-Mull deterrrmuiwl.

flu-fixer" elajecl; is to provide means 0r m'nn'enlvnlly setting the platen zuhustnlg m. Mu. l'iffil'F-lllit! ellurm' rules. I; similar parts in' bulb news of" S13 draw up;

Referring; now to the drawing, 1. indicates LAT-H01") f the framing of the 'mechine, and repre ems the rear portion of a enter tiered lvhicl'l extends transversely of the LORENZ,

nmchine and :2"; its IGM portion is provided Wilh an upwlu'dly extending born 3 which forms an almtmenl; for the platen carriage 4:. The rear portion 2 of the tie-rod is mounted. to be moved. transversely of the machine and rests upon a Slide 5 provided upon the framing of the machine and is also suppajmtecl and guided in a Way 6 de-.

pending fromu bed 7 supported upon the upper portion of the framework of the maclline. The type bars, one of which is shcwin at 8 are suppm-tecl in bank upon this bed and are armnged in arcuate form s0 as to enable them to be pmjecterl against a common gveint upon the platen by mechanism, denetecl generally at 10, which 25.4 aclaptecl t0 e2 mfmmrlxwl Willl a lzey level, not shown. 13. denotes; he glut n which, in. the nesenl; 'nce is censtfiuted by a thin x'netnllic folll'lfil with plain front face for reeel ving the impressions of the types, and with curved rear face which conforms to Fil the contour (if the paper roll and, lies in c0n- I taizt thermvitlp the latter being shown corp veneienally at 12.

The above described mechanism forms n0 essential part, uf my inrenl-ion, the same belug shown, described. and (*laimed, in patent to W. l. Kidder and C. W. Sponsel N0. 879,107, (la-ted Feb. 11th, 1908. A descrip tion of said x'neclmnism hae been given however, to render the objects of my ini enbiou (.lkiUOl of 1milzrl'slizu'uling.

..'l."l':e platen carriage 4., in the present in l, is constituted by :1 platen lmme 13 llih piwvtally uttaehe(.., at 14:, at

r emlq l0 :1 lor itudinally and vertinmly n'lowzlwle rail. 1.5, the helix-n riding in a sl'zi'ltable rail 16 connected wfh shift lever l? mounted upon :1 shift slm'fe lu Shift shaft 18 is provide l ith an mm 1.9 tl'n'eugh which the same is rnclzml to shift the platen by means; at shift mechanism Im tslmwn herein ecumenical with. said arm. ll;

will be .lna'lerstmul lmwevezr,,lhat when mm.

l? uiwkecl eitlmupward ly er (lmvnm rclly j enifl; shaft: he mire laten c-m'riage will. be correspondingly me 2d W'tll reepecl; to abutmenfi 3, and that during the letter spacing movementsef the carriage, mil 15 will ride on rail 16, balls 9-0 being interposed between these rails in orrleeto allord 2 him tionless travel for lhe platen carriage.

25 of the hub 33' of the pointer meshing with In order to always maintain the platen frame 13 against abutment 3, a sprin 21 is interposed between an abutment 22 ormed upon rail 15 and a casing '23 formed upon the platen frame. This spring maybe adjustedv ,as bymeans of an ad usting screw 24 s that the platen carriage may be held against the abutment 3 with any desired degree of pressure. An abutment 25 formed upon the plateiiframe is adapted-t0 engage with abutment 22 of rail 15 and prevent the platen frame from being tilted too far forward.

Shaft 26 which forms the forward end of a toothed collar 31 near its forward end, the

teeth of which are adapted'to mesh with similar teeth formed upon the hub 33 of an adjustable pointer 34 which is adapted to be secured to shaft 26 by means of a screw 35 threaded into the end of said shaft, the teeth those of collar 31 and operating to hold the pointer 34 in any adjusted position with respect to shaft 26.

Dial 30 is 56 mounted upon the front wall of the machine as to enable pointer 34 to cooperate therewith to indicate tothe operator the position of the platen with respect to the printing plane, and is provided with a pair .of stops 36 and 37 with which the pointer 34 engages and which limit the rotative movement thereof in either direction.

. Having thus described the construction of this embodiment of my invention, the operation thereof may now be understood. By

- setting the platen 11 in the proper'position to receive imprints when a single thickness of paper'is interposed between the platen and the types and then releasing the teeth of the pointer from those of the collar 31 of the shaft 26 of-thev tie-rod, said pointer may. be swung around opposite the zero point of. the dial, whereupon the pointer may be again clamped to shaft 26, as by means of the screw 35. Then, whenever it is desired to insert additional sheets of paper between the platen and the types, the pointer may'be m0ved over the dial to a position opposite the numerals thereon, said dial, in the present instance, being calibrated to indicate from 0 to 20 sheets. It will thus be seen that the operator mayconveniently set the platen into proper position for printmg upon any desired number of sheets.

When the platen carriage is moved for.

ward and backwardby the tie-rod to change faces of the types, the platen frame will folthe position of the platen with respect to the low the movements-of the abutment 3, which forms the rear portion of the tie-rod by reason of the fact that itis spring-pressed thereagainst. Therefore, no lost motion can at any time occur between the platen frame and the abutment'whi'ch mightaifect the quality of the printing.

It will accordingly be'seen that I'have provided mechanism well adapted to attain, among others, all the objects and ends above enumerated in a simple, yet efiicient manner.

One of the advantages inherent in the present construction resides in the fact that the platen frame is always maintained in its rearmost position against the abutment of'the tie-rod and that the adjustment of the tie-rod in either direction will accurately locate the laten'with respect to the printing plane. oreover, the position of the platen'may bezeadil ascertained by the operator by means of t e cohperating dial and pointer.

As many changes could be made in the above construction and many apparently widely different embodiments of this invention could be made without departin from carriers, of an abutment against which the platen carriage rests, and spring means for holding the platen carriage in engagement with said abutment.

2. In a front-strike typewriting machine,

in combination, a platen frame, a platen car; ried thereby, type adapted to co-act with the platen,-afixed abutment directly back of the printing'point adapted to take up the thrust of the type, and means permitting said platen to swing with respect to the printing point.

3. In a typewriting machine, the combination with the platen carriage carrying the platen and a plurality of printing members, of an abutment arranged behind. the platen carriage and adapted to furnish a rigid backing therefor, and spring means for holding the' platen carriage against said abutment.

4. In a typewriting machine, the combination with a platen carriage and a plurality of printing members, of an abutment carriage in engagement with said abutment.

. 5 In a typewriting machine, the combination with a shiftable and longitudinally movable platen carriage, and'printingmeminseam I i and a spring for urging said platen carriage into resilient engagement with said abutment. (i. In. a typewriting inaohine, the combination with the platen carriage carrying theplaten, and type bars, of a vertically and longitudinally movable rail to which said platen carriage is hingerlly connected, an abutment disposed behind the platen can riage, and spring means interposed between said rail and said. platen carriage for bolding the latter in engagement with said abutment.

7. in a type'writin machine, the combination with a platen ame, of a platen carried thereby, the type bars, an abutment adapted to slide fore and aft of the ma- ('lllllP, and extending upwardly behind the platen frame to furnish a rigid backing therefor, a shiftable rail, means for hinging said olaten frame to said shiftable rail.

and spring means interposed between said shittable rail and said platen carriage adapted to hold the latter in engagement with said abutment.

lIn typewriting machine, the combi nation with a platen frame and plurality of type bars, oil an abutment disposed be hind the platen frame and mounted to slide fore and aft of the machine, a vertically and longitudinally movable rail, means For hinging said platen frame upon said rail whereby the same may swing thereon, means for limiting the swinging movement of the platen frame, spring means for holding it in enga lent with said abutment.

9 in a typewriting machine, the comhination with a vertically'and longitudinally movable rail, of a shiftable rail interposed in. the support of said first-mentioned rail and upon which the same travels longitudi- 'ually, a platen frame pivotally mounted 'upon first-mentioned rail, means for limiting; the pivotal movements of said platen freme, abutment disposed behind the platen frame, and spring means interposed between said first-mentioned rail and ten frame for holding the latter st abutment v l0. ln a typewriting: machine, the combination with the platen oarriage oomprisine a platen frame and a rail hinged thereto, or

a xioall y shif dli'lfi rail upon which said lustmentioned rail is mounted and along which the some is adapted to ride for letter spacing, a plurality of type bars, an abutment disposed behind the platen frame,

spring means interposed between the rail of said platen carriageand the platen frame thereof for holdingthe letter in engagement with said abutment, and means for reventing the platen frame from tilt ing rorward upon said rail.

11.. lln a typewriting maolii the coinbination with the platen carriage comprising a platen frame and a. rail hinged thereto, of a vertically shiftable rail upon which said first-mentioned rail is mounted and along which the same is adapted to ride for letter spacing, a plurality of type bars, en abutment disposed behind the platen frame, spring means interposed between the rail of said platen carriage and the platen frame thereof for holding the latter in engage ment with said abutment, and ctr-acting abutments formed upon said rail and the platen frame for preventing the'latter from tilting forward.

12. In a typewriting machine, the combination of a platen carriage comprising a vertically and longitudinally movable rail, and a platen frame pirot'ally mounted upon said rail.

13. In a 'typewriting machine, the eoznbination of a platen carriage comprising longitudinally and vertically movable r a platen frame hinged to said rail, ah tment disposed behind the platen :lfrenie, coasting; abutrnents upon me rail and platen frame for pre\'.. the 'ilOlZJfill" from tilting forward, an a spring interposed between the abutment upon said rail and said platen. frame adapted hold.- the latter in engagement with said abutment.

1.4-. In a typen'riting iine, the eonibia tension member adjustable in the direction of its length and extending between the platen and a fixed portion of the framing oi the nm'chine, an indicating pointer adjust ably mounted upon said. tension member, and means for holding said tension member and said pointer in fixed relation after rela tive adjustment.

15. In a typewriting machine, the combination with a platen and the type bars, of movable 'abutmont disposed behind the platen, an adjustable tension memher con nected with said abutment and a d por tion of the framing of the machine and adapted to more said abutment whereby said platen may be moved toward or rem the printing plane, a pointer mounted upon said tension member, a dial with which. pointer ooi porahes. and means ivl' pointer may be adjusted. nylon sion member and held in. fixed. position thereon after adjustment.

16. In a typewritin. g machine, the combi nation with the platen and the type bars, otlf a tie-rod connecting said platen with the fixed portion of the framing of the m chine, said tie rod comprising a pair of EQlfi 'vely adjustable members, one of which provided with a. plurality of teeth, a penile? adjustebly mounted upon said lestmen;

loo

iat-

tinned member and'having a plurality of teeth which mesh with the teeth of said member, and means for locking said teeth in engagement. s 17.. In a typewriting machine, the combination with the platen and the type bars,

of-a tie-rod extendin between the platen and. the front wall the framing of the cooperates to indicate the position of the platen with respect to the printing plane occupied by the faces of the type bars when they are pro'ected to impression, and means whereby sai pointermay be rotatively adjusted with respect to the member upon which it is mounted and for clamping said pointer in fixed position thereon. .18 In a ty ewriting machine, the combination with t e platen carriage and the ty e bars, of atie-rod comprising a pair of re ati vely adjustable members, one ofwhich is extended rearwardly and then upwardly to form a rigid backing for the laten carriage, the other of said mm are bein threaded into the first-mentioned thereo and; extended through the front wall of the machine, the forward end of said member being provided with a plurality of teeth, agpomter mounted fipon said member and 5 having teeth which mesh therewith, whereby'said ointer may he set in difierent positions t ereon, means for locking said pointer in position upon said member, and a dial with which said pointer cotipe'rates 40 to indicate the position of the platen with respect to the common plane assumed by a the faces of the types w on they are pro \jected to impression. i t 19. In a front strike typewriting machine, in combination, a carriage comprising a rail shifta'ble in one transverse directign and held against movement in a, transverse direction at right angles thereto, and a platen frame pivotally connectedwith said rail whereby it may move transversely in said second-mentioned direction;

2.0. In a ty ewriting machine, the combination with s ifting mechanism, of a laten frame, a pivotally supported shift rai asso- 5 ciated with the shifting mechanism along which the platen frame is adapted to trave means for moving said platen frame transversely to the path of travel of said shift rail, and a hinged connection associated with said platen frame. M

21. In a typewriting machine, the. combi-. "fnation with ashift rail, of a platen frame adapted to reciprocate along said rail, means formovin said platen frame in a 85 substantially straight line transversely to the length of said rail, and a ivotal connection associated with said pfiten frame permitting such movement. 22. In a typewriting machine, the combination with pressure-operated type bars having' a limited path of travel, of a platen frame having a platen normally disposed at the end of said path of travel, a rail along which said platen frame is adapted to reciprocate, means for moving said platen frame relatively to the end of the path of travel of said type bars, and means associated with .said platen 'frame permitting such movement without moving said rail,

23. In a typewriting machlne, in combination, type bars having a limited path of travel, a platen frame, a platen carried thereby normally disposed at the end of the path of travel of said type bars, a shift rail along which the platen frame is adapted to travel, means for moving the platen frame relatively to the end of the path of travel of said type bars and transversely to said shift rail, a hinged connection associated with said platen frame permitting such transverse movement, and means for shifting said rail and frame.

24. In a typewriting machine, in com bination, type bars having a limited path of travel, a platen frame, a platen carried thereby normally disposed at the end of the path of travel. of said ty c bars, a shift rail along which the platen ii ed to travel, an abutment located behind said platen frame for moving the platen frame relatively to the end of the path of travel of said type bars and transversely to said shift rail, and a hinged connection associated with said platen frame permitting such transverse movement.

25. In a typewriting machine, in com-- bination, type bars having a limited path of travel, a platenvframe, a platen carried thereby normally disposed at the end ofthe path of travel of said type bars, a shift rail aleng which the platen frame is adapted to travel, an abutment located behind s'aid platen frame for moving the platen frame relatively to the end of the path of travel of said type bars and. transversely to said shift rail, a hinged'connection associated with said platen frame permitting such transverse movement and means for holding said platen frame adjacent said abutment.

26. In a front-strike typewriting machine, in combination, a platen frame, a platen carried thereby, type adapted to co-act with the platen, a fixedabutment directly back of the printing point adapted to take up the thrust of the type, means permitting said platen to swing with respect to the printing point, and means adapted to limit the swinging movement of the carriage in both directions while inoperative position.

time is adaptinseam 27" In a front-strike typewriti g machine, in combination, aplaten ira e, a platen carried thereby, type adapted to co-a'ct with the platen, a fixed abutment directly haoii of the printing point adapted. to take rip the thrust of the type, means permitting said platen to swing with respect to the printing point, means adapted to limit the swinging movement of the carriage in both directions while in operative position, and spring means tending to urge said carriage toward one of its limits of movement.

28. In a front-strike typewriting machine, in combination, a platen frame, a platen carried thereby type adapted to co-act with the platen, a fixed abutment directly back of the printingpoint adapted to take up the thrust of the type, means permitting said platen to swing with respect to the printing point, and spring means tending to urge said carriage toward one of its limits of swinging movement;

29. In a iront-strike typewriting machine, in combination, a carriage fraine, a platen carried thereby, type adapted to co-act with said platen, a carriage rail associated with the carriage frame, a supporting rail, antiiriction devices between said rails, and a pivotal connection associated with the first of sahi rails adapted; to permit the platen to swing with respect to the type.

30. In a frontstrike typewriting machine, in combination; a carriageirame, a platen carried thereby, type aclapted to co-act with said pi aten, a carriage rail associated. with the carriage frame, a supporting rail, anth friction nlerioen between said. rails, a pivotal connection associates with the first of said rails adapted to permit the piaten to swing with respect to the type and means adapted to limit the swinging movement of the oarriage in both directions Whiie stiii means tending to urge said carriage towarti one of its limits of swinging movement.

32. In a front-strike typewriting machine, in combination, a carriage frame, a piaten carried thereby,type adapted to co-act with said platen, a carriage rail associated with the carriage frame, a supporting rail antifriction devices between said rails, a pivotal connection associated with the first of .said rails adapted to permit the platen to swing with respect to the type, means adapted to limit the swinging movement oi the carriage in both directions, and spring means tending to urge said carriage toward. one of its limits of swinging movement While still iii-operative printing position.

In testimony whereof I my signature, in thepresence of two witnesses.

- WHJLIAM A. llifiithili'ifi. Witnesses (l H. Wilson, H. fineness. 

